GIFtrans, a tool for GIF89a transparent option and interlace mode.

Usage: giftrans [-t color|-T] [-B color] [-b color] [-g oldcolor=newcolor] [-c comment|-C] [-l|-L|-V] [-o filename] [-e filename] [filename]
Convert any GIF file into a GIF89a, with the following changes possible:
-t Specify the transparent color
-T Index of the transparent color is the background color index
-B Specify the transparent color's new value
-b Specify the background color
-g Change a color in the global color table
-c Add a comment
-C Remove old comment
-l Only list the color table
-L Verbose output of GIFs contents
-V Verbose output while converting
-o Redirect stdout to a file
-e Redirect stderr to a file
Colors may be specified as index, as rgb.txt entry or in the #rrggbb form.

Example:

	giftrans -t #ffffff original.gif > whitetrans.gif
